#navigation{
    width: 100%;
    height: 110px;
    background-color: #464d52;
    position: fixed;
    top: 0px;
    z-index: 10;
    opacity: .8;
}
.top_logo{
    width: 500px;
    height: 100%;
    float: left;
}
.top_logo .Logo_A{
    width: 150px;
    height: 100px;
    float: left;
    margin-left: 20px;
    position: absolute;
    top: 0;
    left: 0;
    background: url(../images/Top_Left_logo0.png);
    background-size: 100% 100%;
}
.top_logo .Logo_B{
    width: 450px;
    height: 95px;
    float: right;
    margin-top: 10px;
    position: absolute;
    top: 0px;
    background: url(../images/Top_Left_logo.png);
    background-size: 100% 100%;
}

/* 导航推荐栏 */
.top_navigation{
    width: 520px;
    height: 90px;
    margin-left: 10%;
    position: fixed;
    top: 0px;
    left: 30%;
    /* z-index: 25; */
}

.top_navigation li{
    text-align: center;
    width: 100px;
    height: 78px;
    float: left;
    z-index: 10;
    margin: 30px 2px 0 2px;
    font-size: 17px;
    color: white;
}
.top_navigation li span{
    width: 100px;
    display: block;
    text-align: center;
    margin-top: 5px;
    float: left;
    font-size: 12px;
    color: #bbbfce;
}
.top_navigation li:hover{
    border-bottom: 2px solid #09e7f7;
}

/* 新闻延伸 */
.journalism_extend{
    width: 100px;
    height: 160px;
    background-color: #464d52;
    position: fixed;
    z-index: 0;
    top: -50px;
    display: none;
    transition: top 1s，
                display 1s;
}

.journalism_extend a{
    display: block;
    font-size: 14px;
    color: #ccdfe5;
    height: 25px;
    margin: 13px 0 0 0px;
}
.journalism_extend a:hover{
    color: white;
}
.top_navigation li:nth-child(2):hover .journalism_extend{
    display: block;
    top: 110px;
}
/* 右侧分享栏 */
.top_share{
    width: 210px;
    height: 110px;
    float: right;
    position: fixed;
    top: 0px;
    right: 5%;
}
.top_share li{
    width: 40px;
    height: 80px;
    margin-top: 30px;
    float: left;

}

.top_share li span{
    width: 42px;
    height: 42px;
    text-align: center;
    font-size: 30px;
    margin-bottom: 38px;
    color: #ccdfe5;
    display: block;
    /* z-index: 10; */
}
.top_share li span:hover{
    color: white;
}

/* 分享延伸栏 */
.top_share .share_extend{
    width: 42px;
    height: 160px;
    background-color: #464d52;
    position: fixed;
    /* z-index: 0; */
    top: -50px;
    display: none;
    opacity: 0;
    transition: top 1s;
}
.top_share .share_extend a{
    width: 42px;
    height: 31px;
    color:  #ccdfe5;
    display: block;
    font-size: 25px;
    text-align: center;
}
.top_share .share_extend a:hover{
    color: white;
}
.top_share li:last-of-type:hover .share_extend{
    opacity: 0.8;
    border-top: 2px solid #09e7f7;
    top: 110px;
    display: block;
}
.top_share li:first-of-type:hover .WX_box{
    opacity: 0.8;
    border-top: 2px solid  #09e7f7;
}
/* 微信公众号推广栏 */
.WX_box{
    width: 120px;
    height: 140px;
    background-color: #464d52;
    position: absolute;
    left: -40px;
    opacity: 0;
    transition: opacity 1s;
}
.wx{
    width: 100px;
    height: 100px;
    background: url(../images/Top_right_WX.jpg);
    background-size: 100% 100%;
    position: fixed;
    top: 110px;
    margin: 10px;
}
.WX_box h5{
    width: 120px;
    height: 20px;
    color: white;
    font-size: 14px;
    text-align: center;
    position: absolute;
    top: 115px;
    display: block;
}